27Installation and ServicingFLUE OUTLETSECTION 2 - INSTALLATION2ExtensionDuctVerticalconnector542.15 ASSEMBLING THE ROOF FLUE KITDetermine the correct height that the flue should terminate abovethe roof. If after calculating or measuring the overall flue heightfrom the top of the boiler, it is necessary to cut both pipes ofassembly A, then ensure they are cut equally leaving the innerflue tube longer than the outer air tube as supplied.Ensure the cut pipe ends are free from any burrs.1. Position the roof flashing plate (supplied separately) over thehole cut in the roof and insert flue terminal from the roof end.nm8739min 25 omax 45 oMAX LENGTH:7.5mBOILERnm8740Flue TerminalPitched roof tileweather collarFlat roof tileweather collar13G9557b'X'62. Fit the vertical connector (supplied in kit) in accordance with theinstructions provided with the vertical connector kit.3. Secure the vertical connector by applying downward pressureon the connector.4. Position the clamp on the top face of the flue manifold and pushit horizontally backwards. Locate both clamp lugs into the fluemanifold and secure to the flue manifold with the M5 retainingscrew.5. Push extension duct (if required (supplied separately)) intovertical connector.Note. Ensure turret sample points are servicable and all caps andplugs are fitted. Fill the condense trap/siphon with water.6. If the last extension duct requires cutting, measure ‘X’, the distance(outer ducts), between the duct and the terminal and add 100 mm to thisdimension. This gives the length of the last extension duct.Note. Check the position of the inner flue duct relative to the outer duct onthe assembled extension duct(s) and ensure the terminal flue duct is cutlonger than the air duct to ensure engagement in the final flue duct seal.7. Finally ensure the roof flashing plate is correctly sealed to the roof.ASSEMBLY A